A docker image that runs a minecraft server.
To build and run the latest version of minecraft
docker build . -t minecraft-server:latest
docker run -it -p 25565:25565 minecraft:latest
To sync the state of the server in an S3 bucket, an S3_BUCKET variable needs to be provided. For example when runs locally:
docker run -v $HOME/.aws/credentials:/root/.aws/credentials:ro -e S3_BUCKET=s3-minecraft-data -it -p 25565:25565 minecraft:latest
The server's JVM occupies 75% of containers memory by default. This settings can be changed via JAVA_MEMORY_OPTIONS environment variable. For example:
ENV JAVA_MEMORY_OPTIONS="-XX:InitialRAMPercentage=75 -XX:MaxRAMPercentage=75"
# Fixed settings
ENV JAVA_MEMORY_OPTIONS="-Xmx2G -Xms2G"
Additionally JVM settings can be provided via JAVA_OPTIONS environment variable.